diff --git a/docs/scripts/patch_devsite_toc.py b/docs/scripts/patch_devsite_toc.py
index 78cc6fd39..c794a0a90 100644
--- a/docs/scripts/patch_devsite_toc.py
+++ b/docs/scripts/patch_devsite_toc.py
@@ -195,9 +195,7 @@ def validate_toc(toc_file_path, expected_section_list, added_sections):
     # Add secrtions for the async_data_client and classic_client directories
     toc_path = "_build/html/docfx_yaml/toc.yml"
     custom_sections = [
-        TocSection(
-            dir_name="data_client", index_file_name="usage.rst"
-        ),
+        TocSection(dir_name="data_client", index_file_name="usage.rst"),
         TocSection(dir_name="classic_client", index_file_name="usage.rst"),
     ]
     add_sections(toc_path, custom_sections)
diff --git a/google/cloud/bigtable/data/execute_query/__init__.py b/google/cloud/bigtable/data/execute_query/__init__.py
index ac49355ae..31fd5e3cc 100644
--- a/google/cloud/bigtable/data/execute_query/__init__.py
+++ b/google/cloud/bigtable/data/execute_query/__init__.py
@@ -29,6 +29,7 @@
     Struct,
 )
 from google.cloud.bigtable.data._cross_sync import CrossSync
+
 CrossSync.add_mapping("ExecuteQueryIterator", ExecuteQueryIteratorAsync)
 CrossSync._Sync_Impl.add_mapping("ExecuteQueryIterator", ExecuteQueryIterator)
 
diff --git a/tests/unit/data/test_sync_up_to_date.py b/tests/unit/data/test_sync_up_to_date.py
index 66d9a1619..492d35ddf 100644
--- a/tests/unit/data/test_sync_up_to_date.py
+++ b/tests/unit/data/test_sync_up_to_date.py
@@ -29,6 +29,7 @@
 
 sync_files = list(convert_files_in_dir(repo_root))
 
+
 def test_found_files():
     """
     Make sure sync_test is populated with some of the files we expect to see,
@@ -42,7 +43,9 @@ def test_found_files():
     assert "execute_query_iterator.py" in outputs
     assert "test_client.py" in outputs
     assert "test_system_autogen.py" in outputs, "system tests not found"
-    assert "client_handler_data_sync_autogen.py" in outputs, "test proxy handler not found"
+    assert (
+        "client_handler_data_sync_autogen.py" in outputs
+    ), "test proxy handler not found"
 
 
 @pytest.mark.skipif(
@@ -63,7 +66,9 @@ def test_sync_up_to_date(sync_file):
     # compare by content
     diff = unified_diff(found_render.splitlines(), new_render.splitlines(), lineterm="")
     diff_str = "\n".join(diff)
-    assert not diff_str, f"Found differences. Run `nox -s generate_sync` to update:\n{diff_str}"
+    assert (
+        not diff_str
+    ), f"Found differences. Run `nox -s generate_sync` to update:\n{diff_str}"
     # compare by hash
     new_hash = hashlib.md5(new_render.encode()).hexdigest()
     found_hash = hashlib.md5(found_render.encode()).hexdigest()